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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 128 |
| 3 | 704 |
| 4 | 3072 |
| 5 | 11488 |
| 6 | 38400 |
| 7 | 117632 |
| 8 | 335872 |
| 9 | 904784 |
| 10 | 2320128 |
| 11 | 5702208 |
| 12 | 13504512 |
| 13 | 30952544 |
| 14 | 68901888 |
| 15 | 149403264 |
| 16 | 316342272 |
| 17 | 655445792 |
| 18 | 1331327616 |
| 19 | 2655115712 |
| 20 | 5206288384 |
| 21 | 10049485312 |
| 22 | 19115905536 |
| 23 | 35867019904 |
| 24 | 66437873664 |
[1,16,128,704,3072,11488,38400,117632,335872, 904784,2320128,5702208,13504512,30952544,68901888, 149403264,316342272,655445792,1331327616, 2655115712,5206288384,10049485312,19115905536, 35867019904,66437873664] |